Hall, Edwin Herbert, 1855-1938 · New York, H. Holt and company · leaf 80
Fig. 44. Fig. 45. Fig. 46. The directionoi the third force is evidently southwest, in a line withthe diagonal of the rectangle, of which the base is 4 and the height 7.The magnitude of the third force is evidently equal to the length ofthe diagonal, which a simple rule of geometry shows to be v4-2…
Physics
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